embOS for Cortex M was developed for and with the ARM DS-5 and supports all memory models offered by this platform.
It comes with easy to use start projects for the ARM DS-5 IDE. Initilization code for different Cortex M starter boards is included.
embOS for Cortex M is fully CMSIS compliant.
Software development with the DS-5 debugger with JTAG tools like DSTREAM is possible.
|Pricing||Trial download||Subscribe to embOS software notification||Release Notes|
Resources and performance data
|Kernel size (ROM)||Approx. 1700 bytes|
|Kernel RAM usage||51 bytes|
|RAM usage per task control block||44 bytes|
|RAM usage per resource semaphore||16 bytes|
|RAM usage per counting semaphore||8 bytes|
|RAM usage per mailbox||24 bytes|
|RAM usage per software timer||20 bytes|
|RAM usage event||0 bytes|
|Min. stack-size per task (RAM)||72 bytes|
|Context switch time||2.1 µs|
|Interrupt latency time||Zero|
|Kernel CPU usage/TICK||Less than .2% of total calculation time at 1000 interrupts/second (1ms TICK)|
|Basic time unit (TICK)||Typ. 1 ms, min. 20 µs (50 kHz interrupt frequency)|
|Max. no. of tasks||Unlimited (by available RAM only)|
|Max. no. of mailboxes||Unlimited (by available RAM only)|
|Max. no. of semaphores||Unlimited (by available RAM only)|
|Max. no. of software timers||Unlimited (by available RAM only)|
|Max. no. of priorities||Unlimited|
|Stack size idle task (RAM)||0 (no memory needed)|
|Task switches from within ISR||Possible|
Absolute values given above were measured with embOS XRelease build on an STM32F407 CPU running at 168MHz.
Board support packages
embOS comes with lots of ready to go start projects and support packages for various Cortex M CPUs and starterboards.
|ST STM32F103||IAR STM32-SK|
|ST STM32F40G||ST STM32F40G-Eval|